draw_line() inconsistency with CodeSkulptor

[goekce]

The following code is rendered differently when drawn with simplegui. The edges of draw_line() of simplequi seem to be longer:

try:
    import simplegui
except ModuleNotFoundError:
    import simplequi as simplegui

def draw(c):
    c.draw_circle([90, 200], 20, 10, 'white')
    c.draw_circle([210, 200], 20, 10, 'white')
    c.draw_line([50, 180], [250, 180], 60, 'red')
    c.draw_line([55, 170], [90, 120], 5, 'red')
    c.draw_line([90, 120], [130, 120], 5, 'red')
    c.draw_line([180, 108], [180, 160], 140, 'red')


f = simplegui.create_frame('', 300, 300)
f.set_draw_handler(draw)
f.start()

PS: Thanks for this lightweight module!